Put this little bright spot anywhere--your belt, your backpack, your seatpost--and ride on. The Flashback is your go-to savior, packing a mighty "I'm here!" punch to keep you visible on the streets. With its belt clip, you can literally clip it on just about anything, and its compact size makes it a total no-brainer for keeping your ride safe and your street-cred high. - Compact, bright, and waterproof. - Built-in fabric belt clip makes it a clip-anywhere taillight option (seatpost mount included). - Four operating modes: Steady (10 lumens), Power Flash (20 lumens), Disco Flash (14 lumens), Eco Flash (5 lumens). - 2- to 20-hour runtime, depending on mode. - Tested and approved for the following Specialized helmet models: Align, Ambush Comp, Chamonix, Propero II, Echelon II